Abstract
A 72 year-old man was admitted to our hospital because of melena. Double contrast X-ray examination of the small intestine showed a stenosis at the jejunum, 60 cm anal from Treitz Ligament, 3.5 cm in length. The Kerckring's folds of the stenotic lesion were wide with small ulceration. The border of lesion was smooth and enlargement of the oral side was not appeared. These roentgenological findings strongly suggested malignant lymphoma. In addition, US and CT-scan revealed mass in the same region. The tumor and regional lymph-nodes were resected. Intraoperative endoscopy revealed coarse mucosa with ulcer scar and the border of lesion was not clear. The resected tumor showed enlarged Kerckring's fold with irregular ulceration. Histological examination revealed diffuse type of malignant lymphoma, small cell type and the lymphoma cells possessed the IgG, x type surface membrane immunoglobulin, which suggests a monoclonal B cell origin.
